Ceftazidime (contains ca. 10% Na2CO3) CAS 72558-82-8
| CAS No. | 72558-82-8 |
| Molecular Formula | C22H22N6O7S2 |
| Molecular Weight | 546.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ceftazidime (contains ca. 10% Na2CO3) (CAS 72558-82-8), a certified reference material (molecular formula C22H22N6O7S2, MW 546.58 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Ceftazidime (contains ca. 10% Na2CO3) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 546.58 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C22H22N6O7S2 |
| Molecular Weight | 546.58 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Ceftazidime Standards
- Ceftazidime EP Impurity A (CAS 1000980-60-8)
- Ceftazidime EP Impurity B (CAS 97148-38-4)
- Ceftazidime Impurity 56 (CAS CATO-C4X-121256)
- Ceftazidime Impurity C19 (CAS 217796-42-4)
- Ceftazidime Impurity 52 (CAS CATO-C4X-121252)
- Ceftazidime Impurity 74 (CAS CATO-C4X-121274)
- Ceftazidime impurity 125 (CAS CATO-C4X-1212125)
- Ceftazidime Impurity 90 (CAS CATO-C4X-121290)
Recommended Standards
- Cefditoren Impurity 58 (CAS CATO-C4X-135858)
- 4-ETHYL-N-{3-[(4-METHYLPIPERAZIN-1-YL)METHYL]-5-(TRIFLUOROMETHYL)PHENYL-3-(2-{PYRAZOLO[1,5-A]PYRIMIDIN-6-YLETHYNYL)BENZAMIDE (CAS 1429617-90-2)
- 3'-Deoxy-3'-fluoro-5'-O-(4,4'-dimethoxytrityl)thymidine (CAS 290371-78-7)
- 5'-(4-Sulfophenyl)-[1,1':3',1''-terphenyl]-4,4''-disulfonic acid (CAS 343821-13-6)
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- (Z)-3-Methyl-2-penten-4-yn-1-ol (CAS 6153-05-5)
- Tetracycline phosphate complex (CAS 1336-20-5)
- 2-(Hydroxymethyl)-6-methylpyrimidin-4-ol (CAS 33796-42-8)
- Tert-butyl 6-bromo-3-methyl-1h-indazole-1-carboxylate (CAS 1300582-43-7)
- 2-sec-butyl-4,5-dihydrothiazole (CAS 56367-27-2)
- 4-(Benzo[d][1,3]dioxol-5-yl)but-3-enoic acid (CAS 62848-88-8)
- Ethyl 2-(3,5-dimethylpyridin-4-yl)acetate (CAS 1393553-65-5)
- Semaglutide Impurity 160 (x TFA Salt) (CAS CATO-C4X-2226160)
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